CN102925164A - Coke oven heating method - Google Patents
Coke oven heating method Download PDFInfo
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- CN102925164A CN102925164A CN2012104536413A CN201210453641A CN102925164A CN 102925164 A CN102925164 A CN 102925164A CN 2012104536413 A CN2012104536413 A CN 2012104536413A CN 201210453641 A CN201210453641 A CN 201210453641A CN 102925164 A CN102925164 A CN 102925164A
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Abstract
The invention relates to the field of metallurgical coking, and discloses a coke oven heating method. The coke oven heating method is characterized in that air is supplied to a vertical heating flue of a combustion chamber in sectionalized mode, lean gas or rich gas or mixed gas is supplied from the bottom of the combustion chamber, the gas and the air are mixed and combust in sectionalized mode to generate waste gas, the generated waste gas rises to the top of the vertical heating flue, passes through crossing holes and turns to enter into a downdraft vertical heating flue, downdrafts passing through the bottom of the downdraft vertical heating flue pass through chutes and enter into an adjacent heat collecting chamber, a waste gas circulation hole is arranged in the root portion of a partition wall of two flues of a twinflue, the waste gas in the downdraft vertical heating flue is sucked into an updraft vertical heating flue through the waste gas circulation hole and mixed with the flow of rising combustion gas, and therefore the purposes of diluting the mixed combustion gas, lowering combustion intensity, elongating flame and improving heating uniformity of a coking chamber in the height direction are achieved. The coke oven heating method has the advantages that heating uniformity of a coke oven in the height direction can be effectively improved, large-scale development of the coke oven can be achieved, and heat loss can be reduced.
Description
Technical field
The present invention relates to metallurgical coking field, particularly use rich gas, low-grade gas or mixed gas heating coke oven, is a kind of control method of inner multi-section-combustion.
Background technology
Along with the development of coking technology, national policy is also more and more higher to the environmental requirement of coking industry, especially to the disposal of pollutants of coking paroxysmal, NO
XEmission limit set is more and more stricter.Therefore, Coke-oven Design just towards the structural development that maximizes and combine with Multi-point combustion control, to reduce the coke pushing number of times, reduces NO
XBe generated as target, thereby meet the requirement of environmental protection.
Summary of the invention
The purpose of this invention is to provide a kind of coke oven heating means, adopt re-heat down-regulation type, air segmenting to feed the flue burning, the heating means that low-grade gas, rich gas or mixed gas feed from the bottom, combustion chamber, the method main purpose are to reduce NO
XGeneration, be fit to the coke oven large scale development, but Effective Raise coke oven height to heating uniformity, reduce thermosteresis.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of coke oven heating means, the coking coal coking chamber of packing into by providing heat with coking chamber combustion chamber alternately, is smelt coke with the coal in the coking chamber; The combustion chamber is comprised of some flues, and each forms a twinflue to flue, is provided with partition wall between twinflue two flues, and two flue tops are communicated with by crossing over the hole; It is characterized in that air segmenting feeds the combustion chamber flue, low-grade gas, rich gas or mixed gas feed from the bottom, combustion chamber; The waste gas that coal gas and air mixed sectional combustion produce rises to the flue top, turn to and enter the downdraft flue through crossing over the hole, downdraft through the flue bottom enters adjacent regenerator through chute, in regenerator, carry out heat exchange with checker brick, waste gas after the cooling enters bottom flue through adjustable grate hole, at last by dividing a flue, main flue to smoke stack emission.
Be provided with the air of multistage air feed in the flue partition of described combustion chamber for entrance, the first paragraph air is positioned at the flue bottom for entrance, air feeds opening's edge combustion chamber flue partition height to being distributed in the different heights position, topmost be provided with slidably adjusting brick in exit at it, thereby change the airdelivery rate that epimere air stream outlet sectional area changes each segmentation outlet by adjusting brick slidably; The root of described twinflue two flue partitions is provided with exhaust gas circulation hole, by exhaust gas circulation hole with the Abgasabsaugung in the downdraft flue to the air-flow flue that rises, mix with the combustion gas flowing that rises, reach the dilute combustion gas mixture, reduce the burning severe degree, elongate flame, improve the coking chamber height to the purpose of heating uniformity.
When using the rich gas combustion heating, rich gas adopts lower spray to be fed by the flue bottom, air segmenting feeds the combustion chamber flue, the waste gas that burning produces rises to the flue top, turn to and enter the downdraft flue through crossing over the hole, the downdraft chute through the flue bottom enters adjacent regenerator, carries out heat exchange with checker brick in regenerator, waste gas after the cooling enters bottom flue through adjustable grate hole brick, discharges by a minute flue, main flue to chimney at last;
When using low-grade gas or mixed gas combustion heating, low-grade gas or mixed gas arrive combustion chamber flue bottom through the chute district via bottom flue after regenerator; Air segmenting feeds combustion chamber flue burning, the waste gas that burning produces rises to the flue top, turn to and enter the downdraft flue through crossing over the hole, downdraft chute through the flue bottom enters adjacent regenerator, in regenerator, carry out heat exchange with checker brick, waste gas after the cooling enters bottom flue through adjustable grate hole, discharges by a minute flue, main flue to chimney at last.
The infeed amount of described low-grade gas or mixed gas, air changes the feed rate of air-flow by the airflow sectional area that changes the adjustable grate brick between regenerator bottom and the bottom flue top, adopts in the grate brick hole plus-minus adjusting brick to realize adjusting.
The method is applicable to the coke oven that the coking chamber height is 5-10 rice, can adopt low-grade gas, rich gas or the heat supply of mixed gas three types fuel.
Compared with prior art, the invention has the beneficial effects as follows:
1) uses the method can effectively improve the coke oven height to heating uniformity, realize that coke oven is to large scale development; Use the coke furnace carbonization chamber height of this method can reach more than the 7m to size; Along with coke oven maximizes, the coking chamber single hole is volume gain.Produce same output coke, the coke pushing number of times reduces, and the paroxysmal exhaust emission reduces, and effectively promotes the operation efficiency of coke over machinery;
When 2) using low-grade gas or mixed gas heat supply, low-grade gas or mixed gas side enter, and air segmenting feeds flue, and air infeed amount all can be regulated; This method combines with waste gas circulation, can effectively improve the coke oven height to heating uniformity, minimizing thermosteresis, has improved the thermo-efficiency of coke oven;
When 3) adopting the rich gas heat supply, spray under the rich gas, air segmenting feed flue, burn with rich gas, again in conjunction with exhaust gas recirculation, can effectively improve the coke oven height to heating uniformity, reduce thermosteresis, have improved the thermo-efficiency of coke oven;
4) sectional combustion and exhaust gas recirculation are conducive to control combustion, reduce the severe degree of rich gas burning, reduce high temperature dot, thereby reduce NO
XGeneration, be more conducive to environmental protection.
Description of drawings
Fig. 1 is coking furnace shaft sectional view of the present invention;
Fig. 2 is coking furnace shaft of the present invention combustion chamber sectional view.
Figure 1: - combustion chamber,, 2 - carbonization chamber,, 3 - updraft flue,, 4 - downdraft flue,,,, 5 - downdraft ramps,, 6 - Gas updraft ramps ,, 7 - air updraft ramps,, 8 - regenerative chamber (the exchange of gas),, 9 - small flue (exhaust gas, the exchange),, 10 - small flue gas,, 11 - airborne smoke Road,, 12 - gas regenerator,, 13 - air regenerator,, 14 - rich gas channel,, 15 - depleted gas or mixed gas supply inlet (gas exit ramps),, 16 - first paragraph of the air supply entrance (exit ramps air) 17 - air passage,, 18 - second air supply inlet,, 19 - third air supply inlet,, 20 - double fire Road crossing Kong,, 21 - exhaust gas recirculation hole, 22 - rich gas nozzle
Embodiment
Describe furnace binding of the present invention and heating means in detail below in conjunction with accompanying drawing.
See Fig. 1, coke oven construction comprises combustion chamber 1, coking chamber 2, chute, regenerator, and chute comprises coal gas upstream chute 6, air upstream chute 7, downdraft chute 5(this exchange shown in Figure 1); Regenerator comprises gas regenerator 12, air regenerator 13, waste gas regenerator 8(this exchange shown in Figure 1).Coking coal is by the oven top of coke oven hole coking chamber 2 of packing into of coalingging, and by providing heat that the shove charge coal is smelt coke with coking chamber 2 combustion chamber alternately, the raw gas of generation enters gas recovery system by the rising pore at furnace roof position.
See Fig. 2, coke oven combustion chamber comprises that combustion chamber twinflue, air and coal gas (low-grade gas or mixed gas, rich gas) are for entrance, twinflue leap hole 20, flue bottom exhaust gas circulation hole 21.Twinflue is comprised of upstream flue 3 and downdraft flue 4, and upstream flue 3 and downdraft flue 4 are communicated with by the leap hole 20 at flue top.
Air and coal gas comprise that for entrance low-grade gas or mixed gas also are the outlets of coal gas chute for entrance 15(), the first paragraph air also is the outlet of air chute for entrance 16(), the second segment air for entrance 18 and the 3rd section air for entrance 19, low-grade gas or mixed gas export for entrance 16(coal gas chute for entrance 15 and first paragraph air) be positioned at the flue bottom, the second segment air is positioned at the combustion chamber flue and is positioned at different height for entrance 19 for entrance 18, the 3rd section air.Air passageways 17 is positioned at the duplex flue partition.When adopting rich gas to be fuel, air is the mode that multistage feeds flue, and rich gas sprays into the flue bottom by rich gas nozzle 22.When adopting low-grade gas or mixed gas heat supply, after low-grade gas or mixed gas carry out heat exchange by gas regenerator, bottom 12, enter flue by regenerator top low-grade gas or mixed gas for entrance 15, air segmenting feeds flue; The infeed amount of air changes the feed rate of air-flow by the airflow sectional area that changes the adjustable grate brick between regenerator bottom and the bottom flue top, adopts in the grate brick hole plus-minus adjusting brick to realize adjusting.
The root of duplex flue midfeather is provided with exhaust gas circulation hole 21, by exhaust gas circulation hole 21 two flue bottoms are linked to each other, with the Abgasabsaugung in the downdraft flue 4 to the air-flow flue 3 that rises, mix with the combustion gas flowing that rises, reach the dilute combustion gas mixture, reduce the burning severe degree, elongate flame, improve the coking chamber height to the purpose of heating uniformity.
The bottom, combustion chamber is chute, and the chute bottom is regenerator.There is the gas channel that mutually staggers to be connected with air regenerator and gas regenerator respectively in the chute, as shown in Figure 1 and Figure 2, air passageways 17 in the twinflue partition wall of combustion chamber communicates with gas regenerator 12, air regenerator 13 by coal gas upstream chute 6, air upstream chute 7, and the waste gas after the burning enters regenerator 8 by downdraft chute 5.Regenerator is divided into the little regenerator of a plurality of lattices by little partition wall, and the porous checker brick are arranged in the little regenerator, and the adjustable grate hole that can regulate size is arranged at little regenerator bottom; By realizing that to grate hole plus-minus adjusting brick gas is by the adjusting of sectional area at vault.Be bottom flue in little regenerator bottom, the outer end of bottom flue is connected with a minute flue, discharges by main flue to chimney at last.
Present embodiment coke oven mode of operation is divided into two kinds of Heating States, and corresponding two kinds of fuel heat supplies are specifically described as follows:
1. using low-grade gas or mixed gas to act as a fuel heats coke oven with the air mixed burning
1) air and low-grade gas or mixed gas divide by adjustable grate hole via air bottom flue 11, coal gas bottom flue 10 respectively that distribution capacity is laggard to enter each self-corresponding air regenerator 13 and gas regenerator 12;
2) enter air, low-grade gas or the mixed gas of air regenerator 13 and gas regenerator 12 and the checker brick in the regenerator and carry out heat exchange, rise to the regenerator top to be warming up to ~ 1100 ℃;
3) heating gas and the warm air on arrival regenerator top enter each self-corresponding chute of regenerator top, preheated air enters air upstream chute 7, then air enters respectively gas channel 17 in the outlet 16 of combustion chamber flue bottom air chute and the combustion chamber flue partition via being divided into two-way in the air upstream chute 7, and the air that enter in the gas channel 17 enter flue and coal gas mixed firing by each section outlet; The low-grade gas of preheating or mixed gas enter coal gas upstream chute 6, then export for entrance 15(coal gas chute via coal gas upstream chute 6 arrival flue bottom low-grade gas or mixed gas).
4) waste gas of burning generation rises to the leap hole 20 on flue top, then turn to and enter downdraft flue 4, downdraft chute 5 outlets at the bottom of flue enter adjacent regenerator 8, in regenerator 8, carry out heat exchange with checker brick, be cooled to after the heat exchange ~ 270 ℃ waste gas enters bottom flue, waste gas lobe and flue bent pipe by a minute flue through adjustable grate hole again, discharges by main flue to chimney at last;
6) waste gas circulation: the root at a twinflue midfeather has exhaust gas circulation hole 21, the jet power of upstream and heat buoyancy can produce negative pressure herein, Abgasabsaugung in the downdraft is come, it is mixed with the combustion gas flowing that rises, reach the dilute combustion gas mixture, reduce the burning severe degree, the target of elongating flame finally reaches the coking chamber height to the purpose of heating uniformity;
7) sectional combustion gas flow-regulating: be provided with slidably adjusting brick in the outlet of segmentation air feed top, can change the pneumatic outlet sectional area by plus-minus adjusting brick in the grate brick hole, thereby change segmentation air feed height to the distribution of air flow ratio, regulate height to the heating uniformity purpose to reach;
So far, a combustion processes of using low-grade gas or mixed gas to act as a fuel to heat with air combustion is namely accused and is finished.
2. using rich gas to act as a fuel heats coke oven with the air mixed burning
1) air enters corresponding air regenerator 13 and gas regenerator 12 after distributing by adjustable grate hole via coal gas bottom flue 10, air bottom flue 11;
2) enter the air of air regenerator 13 and gas regenerator 12 and the checker brick in the regenerator and carry out heat exchange, then rise to the regenerator top;
3) warm air at arrival regenerator top enters regenerator top coal gas upstream chute 6 and air upstream chute 7, then gas regenerator 12 airflows enter combustion chamber flue bottom low-grade gas or mixed gas for the outlet of entrance 15(coal gas chute), air regenerator 13 airflows enter flue bottom, combustion chamber first paragraph air for the outlet of entrance 16(air chute) and the interior gas channel 17 of combustion chamber flue partition;
4) rich gas is flowed through and is entered upstream flue 3 behind gas pipe brick, the gas pipe brick in the chute district and the rich gas nozzle 22 at the bottom of the flue in the process pipe gasburner, regenerator main wall of vault;
5) warm air that enters the combustion chamber comprises three parts: the preheated air that is entered for entrance 15 by low-grade gas or mixed gas, enter gas channel 17 by the second segment air for entrance 17, the 3rd section air for entrance 18 air out, three part preheated airs carry out mixed firing with the rich gas that ejects through rich gas nozzle 22;
6) high-temp waste gas of burning generation rises to the leap hole 20 on flue top, then turn to and enter downdraft flue 4, downdraft chute outlet 5 at the bottom of flue enters regenerator 8, in regenerator 8, carry out heat exchange with checker brick, be cooled to after the heat exchange ~ 300 ℃ of waste gas enter bottom flue, waste gas lobe and flue bent pipe through adjustable grate hole again to be passed through to divide a flue, discharge by main flue to chimney at last;
7) waste gas circulation: the root of a twinflue midfeather has exhaust gas circulation hole 21, the jet power of upstream and heat buoyancy can produce negative pressure herein, Abgasabsaugung in the downdraft is come, it is mixed with the combustion gas flowing that rises, reach the dilute combustion gas mixture, reduce the burning severe degree, the target of elongating flame finally reaches the coking chamber height to the purpose of heating uniformity.
8) sectional combustion gas flow-regulating: be provided with slidably adjusting brick in the outlet of segmentation air feed top, by changing the pneumatic outlet sectional area by plus-minus adjusting brick in the grate brick hole, thereby change segmentation air feed height to the air partition rate, regulate height to the heating uniformity purpose to reach;
Two kinds of fuel type of heating of the coke oven of present embodiment and the structure all applicable coking chamber height that is used for are 5 ~ 10 meters the coke oven higher to environmental requirement.
Claims (5)
1. coke oven heating means, coking coal coking chamber of packing into by providing heat with coking chamber combustion chamber alternately, is smelt coke with the coal in the coking chamber; The combustion chamber is comprised of some flues, and each forms a twinflue to flue, is provided with partition wall between twinflue two flues, and two flue tops are communicated with by crossing over the hole; It is characterized in that air segmenting feeds the combustion chamber flue, low-grade gas, rich gas or mixed gas feed from the bottom, combustion chamber; The waste gas that coal gas and air mixed sectional combustion produce rises to the flue top, turn to and enter the downdraft flue through crossing over the hole, downdraft through the flue bottom enters adjacent regenerator through chute, in regenerator, carry out heat exchange with checker brick, waste gas after the cooling enters bottom flue through adjustable grate hole, at last by dividing a flue, main flue to smoke stack emission.
2. a kind of coke oven heating means according to claim 1, it is characterized in that, be provided with the air of multistage air feed in the flue partition of described combustion chamber for entrance, the first paragraph air is positioned at the flue bottom for entrance, air feeds opening's edge combustion chamber flue partition height to being distributed in the different heights position, topmost be provided with slidably adjusting brick in exit at it, thereby change the airdelivery rate that epimere air stream outlet sectional area changes each segmentation outlet by adjusting brick slidably; The root of described twinflue two flue partitions is provided with exhaust gas circulation hole, by exhaust gas circulation hole with the Abgasabsaugung in the downdraft flue to the air-flow flue that rises, mix with the combustion gas flowing that rises, reach the dilute combustion gas mixture, reduce the burning severe degree, elongate flame, improve the coking chamber height to the purpose of heating uniformity.
3. a kind of coke oven heating means according to claim 1 and 2, it is characterized in that, when using the rich gas combustion heating, rich gas adopts lower spray to be fed by the flue bottom, air segmenting feeds the combustion chamber flue, the waste gas that burning produces rises to the flue top, turn to and enter the downdraft flue through crossing over the hole, downdraft chute through the flue bottom enters adjacent regenerator, in regenerator, carry out heat exchange with checker brick, waste gas after the cooling enters bottom flue through adjustable grate hole brick, discharges by a minute flue, main flue to chimney at last;
When using low-grade gas or mixed gas combustion heating, low-grade gas or mixed gas arrive combustion chamber flue bottom through the chute district via bottom flue after regenerator; Air segmenting feeds combustion chamber flue burning, the waste gas that burning produces rises to the flue top, turn to and enter the downdraft flue through crossing over the hole, downdraft chute through the flue bottom enters adjacent regenerator, in regenerator, carry out heat exchange with checker brick, waste gas after the cooling enters bottom flue through adjustable grate hole, discharges by a minute flue, main flue to chimney at last.
4. a kind of coke oven heating means according to claim 1 and 2, it is characterized in that, the infeed amount of described low-grade gas or mixed gas, air changes the feed rate of air-flow by the airflow sectional area that changes the adjustable grate brick between regenerator bottom and the bottom flue top, adopts in the grate brick hole plus-minus adjusting brick to realize adjusting.
5. a kind of coke oven heating means according to claim 1 and 2 is characterized in that, the method is applicable to the coke oven that the coking chamber height is 5-10 rice, can adopt low-grade gas, rich gas or the heat supply of mixed gas three types fuel.
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| CN105400921A (en) * | 2015-12-28 | 2016-03-16 | 郑州安耐克实业有限公司 | Lace-hole lattice brick for blast furnace hot blast stove |
| CN105802639A (en) * | 2016-05-10 | 2016-07-27 | 中冶焦耐工程技术有限公司 | Coke dry quenching furnace diffused gas treatment method |
| CN106118691A (en) * | 2016-08-23 | 2016-11-16 | 迁安市九江煤炭储运有限公司 | A kind of poor gas heating coke oven improving heat levels height |
| CN106190184A (en) * | 2016-08-12 | 2016-12-07 | 湖南千盟智能信息技术有限公司 | A kind of coke oven heating method and device reducing NOx generation |
| CN106190186A (en) * | 2016-08-23 | 2016-12-07 | 迁安市九江煤炭储运有限公司 | A kind of poor gas heating coke oven improving double-edged fine-toothed comb brick |
| CN106221708A (en) * | 2016-07-28 | 2016-12-14 | 宣化钢铁集团有限责任公司 | A kind of conversion method of coke oven heating coal gas |
| CN106987666A (en) * | 2017-04-21 | 2017-07-28 | 重庆钢铁(集团)有限责任公司 | One kind returns coal dust technique and system |
| CN107033927A (en) * | 2017-06-20 | 2017-08-11 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber flue structure of heat stepwise |
| CN107880905A (en) * | 2017-12-15 | 2018-04-06 | 中冶焦耐(大连)工程技术有限公司 | A kind of new coke oven combustion chamber flue structure |
| CN108329932A (en) * | 2018-03-30 | 2018-07-27 | 中冶焦耐(大连)工程技术有限公司 | It is a kind of to cross over the adjustable coke oven construction in hole and cross over hole adjusting method |
| CN108707716A (en) * | 2018-04-13 | 2018-10-26 | 中冶焦耐(大连)工程技术有限公司 | A kind of heating system and heating means of external-heat ultra-large volume coal base upright furnace |
| CN111057558A (en) * | 2019-12-31 | 2020-04-24 | 山东钢铁集团日照有限公司 | Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating |
| CN111436202A (en) * | 2017-09-15 | 2020-07-21 | 蒂森克虏伯工业解决方案股份公司 | Coke oven plant for producing coke, having a circulating flow path that is circulated, and method for operating the coke oven plant, as well as control device and use |
| CN113122284A (en) * | 2021-05-20 | 2021-07-16 | 中冶焦耐(大连)工程技术有限公司 | Method for adjusting low nitrogen emission of reheating coke oven |
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| CN105400921A (en) * | 2015-12-28 | 2016-03-16 | 郑州安耐克实业有限公司 | Lace-hole lattice brick for blast furnace hot blast stove |
| CN105802639A (en) * | 2016-05-10 | 2016-07-27 | 中冶焦耐工程技术有限公司 | Coke dry quenching furnace diffused gas treatment method |
| CN106221708B (en) * | 2016-07-28 | 2018-12-21 | 宣化钢铁集团有限责任公司 | A kind of conversion method of coke oven heating coal gas |
| CN106221708A (en) * | 2016-07-28 | 2016-12-14 | 宣化钢铁集团有限责任公司 | A kind of conversion method of coke oven heating coal gas |
| CN106190184A (en) * | 2016-08-12 | 2016-12-07 | 湖南千盟智能信息技术有限公司 | A kind of coke oven heating method and device reducing NOx generation |
| CN106118691A (en) * | 2016-08-23 | 2016-11-16 | 迁安市九江煤炭储运有限公司 | A kind of poor gas heating coke oven improving heat levels height |
| CN106190186A (en) * | 2016-08-23 | 2016-12-07 | 迁安市九江煤炭储运有限公司 | A kind of poor gas heating coke oven improving double-edged fine-toothed comb brick |
| CN106987666A (en) * | 2017-04-21 | 2017-07-28 | 重庆钢铁(集团)有限责任公司 | One kind returns coal dust technique and system |
| CN107033927B (en) * | 2017-06-20 | 2019-08-27 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber flue structure of segmentally heating |
| CN107033927A (en) * | 2017-06-20 | 2017-08-11 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber flue structure of heat stepwise |
| CN111436202A (en) * | 2017-09-15 | 2020-07-21 | 蒂森克虏伯工业解决方案股份公司 | Coke oven plant for producing coke, having a circulating flow path that is circulated, and method for operating the coke oven plant, as well as control device and use |
| CN107880905A (en) * | 2017-12-15 | 2018-04-06 | 中冶焦耐(大连)工程技术有限公司 | A kind of new coke oven combustion chamber flue structure |
| CN108329932A (en) * | 2018-03-30 | 2018-07-27 | 中冶焦耐(大连)工程技术有限公司 | It is a kind of to cross over the adjustable coke oven construction in hole and cross over hole adjusting method |
| CN108329932B (en) * | 2018-03-30 | 2023-06-20 | 中冶焦耐(大连)工程技术有限公司 | Coke oven structure with adjustable crossing holes and crossing hole adjusting method |
| CN108707716A (en) * | 2018-04-13 | 2018-10-26 | 中冶焦耐(大连)工程技术有限公司 | A kind of heating system and heating means of external-heat ultra-large volume coal base upright furnace |
| CN111057558A (en) * | 2019-12-31 | 2020-04-24 | 山东钢铁集团日照有限公司 | Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating |
| CN113122283A (en) * | 2021-05-14 | 2021-07-16 | 中冶焦耐(大连)工程技术有限公司 | Adjusting method of heating system of compound heat type multi-section heating coke oven |
| CN113122284A (en) * | 2021-05-20 | 2021-07-16 | 中冶焦耐(大连)工程技术有限公司 | Method for adjusting low nitrogen emission of reheating coke oven |
| CN113150795A (en) * | 2021-05-20 | 2021-07-23 | 中冶焦耐(大连)工程技术有限公司 | Grate plate adjusting structure of coke oven regenerator |
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Application publication date: 20130213 |